Adsorption and mass transfer in granular porous membranes/media due to inserted volatile materials

W. Zhang, R. Vilensky, E. Zussman, Alexander Yarin

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Here we study experimentally diffusion mass transfer and adsorption/desorption processes of vapor of sublimating volatile materials located below a granular porous membrane/medium. The adsorption kinetics of three different materials: camphor, naphthalene and 2,4-Dinitrotoluene (DNT) was explored. These chemically different materials with significant differences in volatility were chosen to elucidate the common mechanisms of their physisorption in porous media and to establish a novel method which allows one to use such model materials as camphor and naphthalene for predictions relevant to such low volatility materials as DNT, etc. Accordingly, the experimental results were rationalized in the framework of the adsorption/desorption theory to establish the kinetic and equilibrium adsorption/desorption parameters. It should be emphasized that the transient adsorption/desorption theory developed in the present work is novel. Experiments were conducted at different temperatures below melting points of three volatile substances, with morphologies of the clusters of the adsorbed molecules being explored and the adsorbed mass measured versus time. Two experimental methods were implemented. The first setup revealed the kinetics of adsorption/desorption of different substances onto the sand surface, and enabled an estimate of the kinetic constants, and the second setup provided an additional insight regarding the simultaneous processes of diffusion and adsorption/desorption within granular media. The theoretical/numerical predictions are shown to be in good agreement with the experimental data, as well as the agreement between the two experimental methods used to measure the adsorbed mass on sand was quite satisfactory.

Original languageEnglish
Pages (from-to)248-258
Number of pages11
JournalInternational Journal of Heat and Mass Transfer
Volume116
DOIs
Publication statusPublished - 2018 Jan 1
Externally publishedYes

Fingerprint

mass transfer
Mass transfer
Desorption
2,4-dinitrotoluene
membranes
Membranes
Adsorption
desorption
adsorption
Camphor
camphor
Kinetics
volatility
kinetics
Naphthalene
naphthalene
sands
Sand
Physisorption
predictions

Keywords

  • Adsorption/desorption
  • Porous membranes/media
  • Volatile materials

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Adsorption and mass transfer in granular porous membranes/media due to inserted volatile materials. / Zhang, W.; Vilensky, R.; Zussman, E.; Yarin, Alexander.

In: International Journal of Heat and Mass Transfer, Vol. 116, 01.01.2018, p. 248-258.

Research output: Contribution to journalArticle

Zhang, W. ; Vilensky, R. ; Zussman, E. ; Yarin, Alexander. / Adsorption and mass transfer in granular porous membranes/media due to inserted volatile materials. In: International Journal of Heat and Mass Transfer. 2018 ; Vol. 116. pp. 248-258.
@article{fc2b3f1764174a01ab69634f295df6c4,
title = "Adsorption and mass transfer in granular porous membranes/media due to inserted volatile materials",
abstract = "Here we study experimentally diffusion mass transfer and adsorption/desorption processes of vapor of sublimating volatile materials located below a granular porous membrane/medium. The adsorption kinetics of three different materials: camphor, naphthalene and 2,4-Dinitrotoluene (DNT) was explored. These chemically different materials with significant differences in volatility were chosen to elucidate the common mechanisms of their physisorption in porous media and to establish a novel method which allows one to use such model materials as camphor and naphthalene for predictions relevant to such low volatility materials as DNT, etc. Accordingly, the experimental results were rationalized in the framework of the adsorption/desorption theory to establish the kinetic and equilibrium adsorption/desorption parameters. It should be emphasized that the transient adsorption/desorption theory developed in the present work is novel. Experiments were conducted at different temperatures below melting points of three volatile substances, with morphologies of the clusters of the adsorbed molecules being explored and the adsorbed mass measured versus time. Two experimental methods were implemented. The first setup revealed the kinetics of adsorption/desorption of different substances onto the sand surface, and enabled an estimate of the kinetic constants, and the second setup provided an additional insight regarding the simultaneous processes of diffusion and adsorption/desorption within granular media. The theoretical/numerical predictions are shown to be in good agreement with the experimental data, as well as the agreement between the two experimental methods used to measure the adsorbed mass on sand was quite satisfactory.",
keywords = "Adsorption/desorption, Porous membranes/media, Volatile materials",
author = "W. Zhang and R. Vilensky and E. Zussman and Alexander Yarin",
year = "2018",
month = "1",
day = "1",
doi = "10.1016/j.ijheatmasstransfer.2017.09.012",
language = "English",
volume = "116",
pages = "248--258",
journal = "International Journal of Heat and Mass Transfer",
issn = "0017-9310",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Adsorption and mass transfer in granular porous membranes/media due to inserted volatile materials

AU - Zhang, W.

AU - Vilensky, R.

AU - Zussman, E.

AU - Yarin, Alexander

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Here we study experimentally diffusion mass transfer and adsorption/desorption processes of vapor of sublimating volatile materials located below a granular porous membrane/medium. The adsorption kinetics of three different materials: camphor, naphthalene and 2,4-Dinitrotoluene (DNT) was explored. These chemically different materials with significant differences in volatility were chosen to elucidate the common mechanisms of their physisorption in porous media and to establish a novel method which allows one to use such model materials as camphor and naphthalene for predictions relevant to such low volatility materials as DNT, etc. Accordingly, the experimental results were rationalized in the framework of the adsorption/desorption theory to establish the kinetic and equilibrium adsorption/desorption parameters. It should be emphasized that the transient adsorption/desorption theory developed in the present work is novel. Experiments were conducted at different temperatures below melting points of three volatile substances, with morphologies of the clusters of the adsorbed molecules being explored and the adsorbed mass measured versus time. Two experimental methods were implemented. The first setup revealed the kinetics of adsorption/desorption of different substances onto the sand surface, and enabled an estimate of the kinetic constants, and the second setup provided an additional insight regarding the simultaneous processes of diffusion and adsorption/desorption within granular media. The theoretical/numerical predictions are shown to be in good agreement with the experimental data, as well as the agreement between the two experimental methods used to measure the adsorbed mass on sand was quite satisfactory.

AB - Here we study experimentally diffusion mass transfer and adsorption/desorption processes of vapor of sublimating volatile materials located below a granular porous membrane/medium. The adsorption kinetics of three different materials: camphor, naphthalene and 2,4-Dinitrotoluene (DNT) was explored. These chemically different materials with significant differences in volatility were chosen to elucidate the common mechanisms of their physisorption in porous media and to establish a novel method which allows one to use such model materials as camphor and naphthalene for predictions relevant to such low volatility materials as DNT, etc. Accordingly, the experimental results were rationalized in the framework of the adsorption/desorption theory to establish the kinetic and equilibrium adsorption/desorption parameters. It should be emphasized that the transient adsorption/desorption theory developed in the present work is novel. Experiments were conducted at different temperatures below melting points of three volatile substances, with morphologies of the clusters of the adsorbed molecules being explored and the adsorbed mass measured versus time. Two experimental methods were implemented. The first setup revealed the kinetics of adsorption/desorption of different substances onto the sand surface, and enabled an estimate of the kinetic constants, and the second setup provided an additional insight regarding the simultaneous processes of diffusion and adsorption/desorption within granular media. The theoretical/numerical predictions are shown to be in good agreement with the experimental data, as well as the agreement between the two experimental methods used to measure the adsorbed mass on sand was quite satisfactory.

KW - Adsorption/desorption

KW - Porous membranes/media

KW - Volatile materials

UR - http://www.scopus.com/inward/record.url?scp=85029394635&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85029394635&partnerID=8YFLogxK

U2 - 10.1016/j.ijheatmasstransfer.2017.09.012

DO - 10.1016/j.ijheatmasstransfer.2017.09.012

M3 - Article

AN - SCOPUS:85029394635

VL - 116

SP - 248

EP - 258

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

SN - 0017-9310

ER -